{"product_id":"dual-valve-spring-kit-for-subaru-ej205-ej257-engines","title":"Dual Valve Spring Kit for Subaru EJ205 EJ257 Engines","description":"The Supertech Performance SPRK-TS1015\/SU1 Dual Valve Spring Kit is engineered to enhance the valvetrain performance and durability of Subaru WRX and STI models equipped with EJ205 and EJ257 engines.\n\nConstructed from a premium Super Clean Chrome silicon Vanadium Steel alloy, these valve springs are built for sustained high performance and exceptional durability, especially at high RPMs. Advanced computer design is employed to meticulously manage wire stress levels, ensuring they remain within safe fatigue limits even under extreme operating conditions. This advanced software also ensures that valve spring harmonics are effectively controlled, contributing to overall engine stability and reliability.\n\nThese retainers are CNC machined to exacting standards, ensuring a tight and precise fit within the valvetrain assembly. This precise fitment is crucial for maintaining long-term durability and consistent performance.\n\nSpecifications include a seat pressure of 70 lbs at 35.5mm, a maximum lift of 15.30mm, and a coil bind measurement of 20.70mm. This kit is compatible with Subaru Impreza WRX and STI models, specifically designed for the EJ205 and EJ257 engine variants.","brand":"Supertech","offers":[{"title":"Default Title","offer_id":52663923015992,"sku":"SPRK-TS1015\/SU1","price":350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687720584.jpg?v=1784330866","url":"https:\/\/store.motormia.co\/products\/dual-valve-spring-kit-for-subaru-ej205-ej257-engines","provider":"MOTORMIA","version":"1.0","type":"link"}